Like you said, why would you want that beer in the summer and celebratory cocktail if alcohol has caused you so much pain? Try to focus on your reasons for quitting and the way alcohol affected your life. If not picking up one drink is what it takes to lead a happy, sober life then I think it's a small price to pay!
I find it helpful to go to meetings and read newcomers' posts here at SR. When I speak to someone who's struggling those rose tinted spectacles come straight off.